--- a/toolkit/components/telemetry/TelemetryUtils.jsm
+++ b/toolkit/components/telemetry/TelemetryUtils.jsm
@@ -91,16 +91,21 @@ var TelemetryUtils = {
     ShutdownPingSenderFirstSession: "toolkit.telemetry.shutdownPingSender.enabledFirstSession",
     TelemetryEnabled: "toolkit.telemetry.enabled",
     Unified: "toolkit.telemetry.unified",
     UpdatePing: "toolkit.telemetry.updatePing.enabled",
     NewProfilePingEnabled: "toolkit.telemetry.newProfilePing.enabled",
     NewProfilePingDelay: "toolkit.telemetry.newProfilePing.delay",
     PreviousBuildID: "toolkit.telemetry.previousBuildID",
 
+    // Event Ping Preferences
+    EventPingEventLimit: "toolkit.telemetry.eventping.eventLimit",
+    EventPingMinimumFrequency: "toolkit.telemetry.eventping.minimumFrequency",
+    EventPingMaximumFrequency: "toolkit.telemetry.eventping.maximumFrequency",
+
     // Log Preferences
     LogLevel: "toolkit.telemetry.log.level",
     LogDump: "toolkit.telemetry.log.dump",
 
     // Data reporting Preferences
     AcceptedPolicyDate: "datareporting.policy.dataSubmissionPolicyNotifiedTime",
     AcceptedPolicyVersion: "datareporting.policy.dataSubmissionPolicyAcceptedVersion",
     BypassNotification: "datareporting.policy.dataSubmissionPolicyBypassNotification",